Fire-alarm



(No Model.) P J REGAN FIRE ALARM.

Patented June 26, 1894.

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UNITED STATES PATENT! OFFICE.

PATRICK J. REGAN, OF IOWA CITY, IOWA.

FlREsALARM.

SPECIFICATION forming part of Letters Patent No. 521,919, dated June 26, 1894.

Application filed November 21, 1893- Serial No. 491,592. (No model.)

.ToaZZ whom it may concern 1 3e it known -that I, PATRICK J. REGAN, a citizen of the United States, residing at Iowa City, in the county of Johnson and State of Iowa, have invented a new and useful Fire- ;Alarm, of which the following is a specificalOl].

The invention relates to that class of fire alarms wherein a detonating signal is employed, and adapted to be exploded by means of a fuse lighted, in its turn, by the fire, an alarm of which it is the purpose of the inventlon to give; and my invention has for its obect the production of a superior device of this class, and one which will give an alarm of a louder and more efiective character.

Inthe accompanying drawings the invent1on 1s shown in detail, and therein- Figure 1 represents a sectional view of a building having my improvements applied,

and showing the manner of using them. Fig.

2 is an enlarged section, taken through the torpedo or cartridge. Fig. 3 is an enlarged slde elevation of the same.

The reference numeral 1 indicates a cylindrical chamber or receptacle, formed of wood,

paper, or asbestus, and. open at each end.

This cylinder may be formed by rolling sheets of the material and simultaneously gluing them together, or by any other suitable means. It is preferred, however, that the material be of the non-combustible class, since, if otherwise, it might be fired by the explosive contained in the cylinder.

Located in the upper end of the cylinderl, and fixed securely therein, is the stopper or cork 2, which is immovably secured in place and may be formedof wood, paper, plaster of paris, or any other material suitable for the purpose. 3 indicates a similar cork,'and this is arranged in the lower end of the cylinder so as to close it effectively. Secured in the cork 3, and communicating with the interior of the cylinder, is the rigid metallic tube 4. This tube extends downwardly from the cylinder 1 for a distance equal to about twice the length of the cylinder, and its lower end is left open, as shown. Arranged in'the tube 4, and extending a short distance into the cylinder 1, are the fuses 5, which are shown to be three in number, and which may be of any class capable of conducting fire to the interior of the cylinder. 7 The interior of the cylinder is'fill'ed with any suitable explosive, 6, which is of a quantity that will completely fill the cylinder, and is arranged to communicate with the upper ends of the fuses 5.

Adapted to be placed over the upper end of the cylinder 1 is the waterproof cap 7, which may be constructed of sheet-metal, or any other suitable material, and is of such a size that it will extend aslight distance down the sides of the cylinder. The purpose of this device is to keep the water out of the cylinder, for while it is proposed to waterproof the cylinder, it is possible that some water may find its way through the cork 2 during the continued exposure of the cylinder. By reference to Fig. 1, the use of my invention will be understood, andthere it is shown as arranged with the tube 4: passing through the roof 8, of the building, and terminating a short distance below it, while the upper end, carrying cylinder 1, projects above the roof and, consequently, holds the cylinder in a similar position. The fuses 5 are now carried to various parts of the house, past and to those points where a fire is most likely to originate. Thus, one end of a fuse is shown under the stove 9, while the fuse, on its way to the stove, is passed by the heating drum 10. A second fuse .proceeds along the chimney of the house; and so they are arranged, in order that the fire, wherever it starts, will immediately ignite one of the fuses. As soon as this occurs, the fire will be instantly transmitted to the cylinder 1, and

upon entering it, will explode the matter contained therein and cause a loud report calculated to alarm the inmates of the house, and

adapted to receive an explosive material, a metallic tube fitting in the body-portion and having one end in communication with the interior thereof while the remaining end is adapted to project through the outer wall of the house or other structure with which the alarm is used, and a fuse having one end seated in the explosive material of the bodyportion and passing through the iron tube, 1

re while the remaining end of the fuse proceeds to the interior of the house or other structure, 

